Samsung QLED Q8DN (2018) vs Samsung QLED Q9F (2017)

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QLED Q8DN (2018) compared with QLED Q9F (2017)

	SamsungQLED Q8DN (2018)	SamsungQLED Q9F (2017)
Overview
Released
Released	2018	2017
Display
Panel
Panel	LED LCD	LED LCD
Panel detail
Panel detail	Quantum-dot VA LCD with direct full-array local dimming on the UK Q8DN, confirmed by AVForums' exact UK 55-inch test; the UK Q8FN is a separate edge-lit series.	Flat quantum-dot LED-backlit LCD. TechRadar and Les Numériques identify the reviewed 65-inch panel as side edge-lit; Samsung's UK tables do not publish a native refresh rate or backlight layout for every size.
Resolution
Resolution	3840 × 2160 (4K)	3840 × 2160 (4K)
HDR formats
HDR formats	HDR10, HDR10+, HLG	HDR10, HDR10+, HLG
HDR extras
HDR extras	Samsung's Q HDR 1500 is a product label, not a measured 1500-nit figure for every size. Dolby Vision is unsupported.	Samsung's UK 65-inch table says QHDR 2000 and the 88-inch table QHDR 1500; these are product labels, not measured peak brightness. TechRadar says HLG and HDR10+ were awaiting firmware at review time. Samsung later confirmed HDR10+ on its 2017 UHD TV range through Prime Video; support from other sources is not established here.
Screen finish
Screen finish	Ultra Black Elite Moth Eye antireflection treatment in all three UK maker tables.	Moth Eye anti-reflection treatment in both available UK maker tables.
Colour range
Colour range	Samsung Q Color and billion-colour support in all three UK maker tables.	Samsung's 2017 QLED launch claimed 100% colour volume. Les Numériques measured strong colour on its exact European 65-inch unit but found its Cinema-mode colour error above its preferred threshold; neither figure is assigned to other sizes.
Picture processing
Picture processing	Q Engine, Q Contrast Plus, Supreme UHD Dimming, Auto Motion Plus and 3600 Picture Quality Index in each UK maker table. PQI is not a native refresh rate.	Q Engine, Supreme UHD Dimming, Auto Motion Plus and Picture Quality Index 3400 appear in the separate 65 and 88-inch UK tables. PQI is Samsung's processing score, not native panel Hz.
Picture modes
Picture modes	Film Mode, Natural Mode, Auto Motion Plus and Contrast Enhancer in all three UK maker tables.	Film Mode, Auto Motion Plus and Contrast Enhancer in the UK maker tables. Les Numériques preferred Cinema mode with reduced dynamic processing on its 65-inch unit.
Motion handling
Motion handling	AVForums noted occasional 50 Hz frame skipping on its UK 55-inch test unit; Samsung's UK tables do not publish native Hz.	Les Numériques finds Auto Motion Plus effective on its 65-inch unit but suggests a custom setting to avoid the video-like interpolation effect. Samsung does not publish native Hz for both sizes in the UK tables, so the main refresh row is omitted.
Viewing angle
Viewing angle	AVForums found strong straight-on contrast but reduced off-axis performance on its 55-inch unit.	Both independent 65-inch reviews find visible loss of contrast and colour off-centre despite Samsung's Q Viewing Angle label.
Sizes
Sizes
Sizes	55, 65, 75″	65, 88″
Largest size
Largest size	75″	88″ (better)
Gaming
HDMI ports
HDMI ports	4 (0 HDMI 2.1 at 4K 120 Hz+)	4 (0 HDMI 2.1 at 4K 120 Hz+)
Variable refresh rate
Variable refresh rate	None	None
HDMI detail
HDMI detail	Four HDMI inputs with ARC in the UK maker tables. AVForums found the UK 55-inch unit's inputs on the TV rather than a separate One Connect box.	Four HDMI 2.0a inputs on the 65-inch One Connect box according to TechRadar and Les Numériques; both UK maker tables list four HDMI inputs with ARC. No 4K 120 Hz or eARC capability is claimed.
Input lag
Input lag	–	21 ms in Game Mode and 76 ms in Cinema mode on the European 65-inch Les Numériques review unit; these measurements are not assigned to other sizes.
Game features
Game features	Auto Game Mode and Game Motion Plus in the UK maker tables. Firmware-dependent VRR availability was not established for the UK series at launch.	Game Mode in both UK maker tables. No VRR or automatic low-latency mode is confirmed for this model.
Smart TV and sound
Smart TV platform
Smart TV platform	Tizen	Tizen
Processor
Processor	Q Engine	Q Engine
Speakers
Speakers	40 W, 4.1 channels	60 W, 4.2 channels (better)
Wi-Fi
Wi-Fi	Built-in Wi-Fi	Wi-Fi
Bluetooth
Bluetooth	Bluetooth audio and Bluetooth Low Energy	Bluetooth audio and Bluetooth Low Energy
Speaker detail
Speaker detail	Samsung specifies 40 W, 4.1 channels and a woofer in all three UK maker tables.	Samsung's UK 65 and 88-inch maker tables specify 60 W and 4.2 channels with a woofer. Les Numériques found the 65-inch sound clear for dialogue but still preferred external speakers for films.
Audio features
Audio features	Dolby Digital Plus, Bluetooth audio and Multiroom Link in the UK maker tables.	Dolby Digital Plus, DTS codec, Multiroom Link and Bluetooth audio in both UK maker tables.
Voice assistants
Voice assistants	Samsung voice interaction includes UK English in the 2018 maker tables; present-day service support can differ.	Voice interaction with UK English support in the 2017 UK maker tables; present-day service availability may differ.
Casting
Casting	Samsung SmartThings support, mobile mirroring, DLNA and Wi-Fi Direct in the UK maker tables.	Samsung Smart View, mobile mirroring, DLNA, Wi-Fi Direct and Bluetooth Low Energy in the UK maker tables.
TV tuners
TV tuners	Twin DVB-T2/C/S2 digital tuners, analogue tuner, CI+ 1.4, UK MHEG 5, programme guide, USB recording and time shift.	Twin DVB-T2/C/S2 digital tuners, analogue tuner, CI+ 1.3, UK MHEG 5, programme guide, PVR and time shift in both UK maker tables.
USB
USB	Two USB inputs in all three UK maker tables.	Three USB inputs in both UK maker tables.
Ethernet
Ethernet	Ethernet LAN built in.	Ethernet LAN built in.
Optical audio out
Optical audio out	One optical digital audio output.	One optical digital audio output.
Design and power
Size
Size	Without stand, width × height × depth from separate UK maker tables: 55-inch 1231.2 × 706.8 × 58.7 mm; 65-inch 1450.1 × 829.9 × 58.7 mm; 75-inch 1675.8 × 961.4 × 59.2 mm. Configuration weights exclude stand.	Without stand, width × height × depth: 65-inch 1449.7 × 829.3 × 24.9 mm; 88-inch 1979 × 1131 × 30.4 mm. Configuration weights exclude stand. Samsung UK also identifies 55 and 75-inch Q9F models; their UK model-specific spec tables were unavailable, so their figures are not inferred from the 65 or 88-inch tables.
Stand
Stand	Two widely spaced feet. With-stand weights from separate UK maker tables: 55-inch 20 kg; 65-inch 27.1 kg; 75-inch 39.6 kg.	Samsung's Simple Stand uses two feet on the 65-inch model. With-stand weight: 65-inch 30 kg; 88-inch 74.5 kg. The separate One Connect box holds inputs and has its own power cable; a thin optical lead joins it to the TV.
Power use
Power use	Maximum from separate UK maker tables: 55-inch 235 W; 65-inch 270 W; 75-inch 295 W.	Maximum from each UK maker table: 65-inch 335 W; 88-inch 440 W.
Energy class
Energy class	Old UK maker energy scale: B for 55 and 75-inch; A for 65-inch. Not today’s A–G scale.	B in the old UK energy-label scale for both verified sizes; not today's A–G scale.
Colours
Colours	Carbon Silver front in all three UK maker tables.	Charcoal Black front in both UK maker tables.
In the box
In the box	Samsung's UK tables list TM1890A Smart Control, power cable, manual and e-manual. A precise UK first-sale month was not established.	Samsung's UK maker tables list TM1790A Smart Control plus a TM1240A remote for UK/IE, power cable, manual and e-manual. No Gap wall mount is included with the 88-inch model but optional on the 65-inch.